Time-triggered communication system and method for the synchronized start of a dual-channel network
AssigneeKoninklijke Philips Electronics N.V.
InventorsJorn Ungermann, Peter Fuhrmann
Life of this patent
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Abstract
A dual-channel network with in each case one communication controller (2, 6) for each of the two channels (A, B). In order to ensure that the two channels (A, B) operate on a temporally matched basis, an exchange of current states (“ready, “abort”) takes place via an external or an on-chip interface (1a, 1b). The cold start operation is carried out only if, and so long as, both communication controllers are in the “ready” state.
Claims19
A time-triggered communication system which comprises at least two channels (A, B) and at least a first and a second node of the “cold-start node” type, characterized in that
- a first communication controller is assigned to the first channel (A) and a second communication controller is assigned to the second channel (B),
- the first and the second communication controller each comprise a local clock, said local clocks being independent of each other,
- an interface (1a, 1b) for the interchannel communication is arranged between the first communication controller and the second communication controller,
- both communication controllers have means for generating, sending, receiving and storing a status signal (“ready”, “abort”), and
- both communication controllers (2, 6) perform the start operation only if both (2, 6) are in the “ready” status.
A device for a time-triggered communication system which comprises at least two channels (A, B) and at least two nodes of the “cold-start node” type, characterized in that the device comprises:
- a first communication controller (2) with an independent local clock which is assigned to the first channel (A);
- a second communication controller (6) with an independent local clock which is assigned to the second channel (B);
- an interface (1a, 1b) for the interchannel communication, which is arranged between the two communication controllers (2, 6), and
- means for generating, sending, receiving and storing a status signal (“ready”, “abort”).
Dependencies are inferred from the claim text.